{"product_id":"import-bdna-20746-straight-flute-tap-1-8-unc-bottoming","title":"Import BDNA-20746 Straight Flute Tap 1-8 Unc Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe IMPORT BDNA-20746 is a straight flute bottoming tap designed to cut 1-8 UNC right-hand internal threads in blind and through holes. Built from high-speed steel (HSS) with a gold oxide coating, it resists wear and reduces friction during cutting. The bottoming chamfer style allows threading to the bottom of a blind hole, making it well suited for applications where full thread depth is required close to the hole floor. Four flutes provide chip clearance and cutting stability in a range of metals and materials. Machinists and maintenance technicians reach for this tap when a threading job demands tight, bottom-of-hole thread engagement.\u003c\/p\u003e\n\u003cp\u003eThis tap is used in general machining, maintenance and repair, and fabrication environments where 1-8 UNC coarse-thread fasteners are standard. The 1-8 UNC designation covers large-diameter, coarse-pitch threading common in structural hardware, heavy equipment, and industrial machinery. The bottoming style makes it a follow-up tap in a standard tap set sequence, used after a taper or plug tap has started the thread, or as a standalone tool when thread runout space is minimal.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBottoming chamfer cuts threads to the base of blind holes\u003c\/li\u003e\n  \u003cli\u003e1-8 UNC thread form, 8 threads per inch, right-hand direction\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction handles a wide range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eGold oxide coating reduces friction and improves tool life\u003c\/li\u003e\n  \u003cli\u003e4 flutes provide chip evacuation and cutting stability\u003c\/li\u003e\n  \u003cli\u003eH4 thread limit for controlled fit in standard UNC tapped holes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 1-8 UNC bottoming tap suitable for use in manual tap handles, T-handle wrenches, and machine tapping setups that accept the appropriate square-drive shank size for this thread class.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eTapping should be performed by a qualified machinist or maintenance technician. Always secure the workpiece and use a properly aligned tap handle or tapping head to prevent tap breakage. Apply cutting fluid appropriate to the workpiece material throughout the operation. For blind holes, clear chips frequently to prevent packing and tap failure.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Style\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Gold Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: IMPORT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: BDNA-20746\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMPORT-GENERIC","offers":[{"title":"Default Title","offer_id":51714535555378,"sku":"BDNA-20746","price":64.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310bd250e41c19d53d0c6b47542dab0f.jpg?v=1788502859","url":"https:\/\/voomisupply.com\/products\/import-bdna-20746-straight-flute-tap-1-8-unc-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}